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2375121
GCSE Chemistry unit 1
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gcse
c2
chemistry
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skulparty12
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Henry Simmons
about 9 years ago
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Resource summary
GCSE Chemistry unit 1
Atom
Smallest part of an element that can be recognised as that element.
Element
Contains only one type of atom
Over 100 elements on the periodic table
Mostly Metals
They are split into groups
Group 0 is the noble gasses
Group 1 is the alkaline metals
Group 2 is the Earth Metals
Compound
2 or more elements that have been chemically combined or joined
Bonding
Ionic
Only occurs when a metal is chemically combined with a non metal
one of the elements takes an electron from another
Covalent
Only occurs when a non metal chemically combines non metal
Sharing of an electron
Metallic
Is when the inside of a metal combines with another particle inside of the metal
NaCl
Ionicly Bonded
CH4
Covalenty Bonded
Cu
Metalic Bonding
H2O
Covalently Bonded
O2
Covalently Bonded
When atoms bond covalently they share an electron
This is because they need to complete their outer shells
When atoms bond ionicly one atom takes an electron from another atom
Again because both the atoms want to complete their outer shells
Atoms
Proton
Positively charged
Neutron
Neutrally charged
Electron
Negatively charged
An atom that has the same number of electrons and protons does not have a charge
Atoms that have different numbers of electrons and protons are ions
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